Alarm device for tanks.



Patented Oct. 7, |902.

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UNITED STATES PATENT OFFICE.

MEYER KUBITZKY AND RICHARD B. STEVART, OF NEr YORK, N. Y.

ALARM DEVICE FOR TANKS.

SPECIFICATION forming part of Letters Patent No. 710,872, dated October '7, 1902.

Application tiled February 7, 1902. Serial No. 92,980. (No modeld To fol/Z 1071/0771/ 'llt Duty 0071.007117,.-

Beit known that we, MEYER KUnI'rZKY and RICHARD B. STEWART, citizens of the YUnited States, and residents of the cityofNew York, borough of Manhattan,in the county andy State of New York, have invented a new andl ln1 proved Alarm Device for Tanks, of which the following is a full, clear, and exact description.

The' purpose of the invention is to provide a simple, d urable,and economic form of alarm device especially adapted for use in connection with drip-pans, tanks, washtubs, and other receptacles to indicate when the water or other liquid therein has risen to a predetermined level, and thus tend to prevent an overflow from such receptacles.

Another purpose of the invention is to so construct the device that it may be lengthened and shortened without detracting from its working qualities, and so that contacts will be provided in electric circuit with a bell or a like alarm, with which cont-act a float is adapted to engage at proper time to close the circuit, the float being a reversible one.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawing, forming a part of this specification, in which is shown a section of a tank and a perspective view of the device in the tank, a portion of the device being broken away.

The device practically consists of three main elements-an outer body-section l, an inner body-section 2, arranged to slide in the outer section, and a float The two bodysections are preferably of cylindrical shape, the outer or lower section having a head at its lower end and is entirely open at. its upper end, while the upper end of the inner or upper section 2 is open at its lower end and is closed bya head at its upper end. 30th sections of the body are preferably made of thin non-corrodible metal, and at the lower p0rtion of the outer or lower section l a series of aperturesAis produced to admit of liquid freely entering the said section. The outer body-section is also provided with an opening Bin its bottoni to admit of the liquid readily escaping from the body when it is lifted from the drip-pan G or other form of receptacle in which it may be placed.

The inner or upper body-section 2 is adapted to slide in the lower orouter section l, so that the body may be made long or short to accommodate any reasonable depth of water or other liquid.

It isdesirable that when the two bodylsections have been connected they shall not be accidentally pulled apart. To that end pins or studs C extend inward from the sides of the outer body-section l, near the top, enten ing longitudinal slots ILproduced in the sides of the inner section 2, which slots extend from a point near the lower edge of the inner section usually to its head or other close( end. It will thus be observed that the slots H are closed at their ends, and that while one body-section has limited sliding movement upon the other one section cannot turn in the other.

The upper or inner section 2 is provided with side openings J at its lower portion, adapted to register with the corresponding openings A in the outer section when the two body-sections have been brought as close together as possible, so that at such time the liquid will freely enter the body. Air-vents D are produced in the head of the inner or upper body-section 2, as is likewise an opening K, in which a bracket may be secured to hold the device in position in a tank, washtub, or other deep receptacle.

Two brass contact-points E in the shape of pins are passed through the head of the upper or inner body-section 2', extending' a greater distance within than without the said body-sections. These contact points or pins are usually held in position by screwing them into nuts E2 and F2, located above and below the head of the upper body-section 2 and insulated from the head by suitable washers ES and F'. A wire P connects one contact-point with a battery R. A second wire N connects the other contact-point with an alarm device O, and the alarm device is shown connected with the battery R by a wire S.

The iioat 3, which is located in the body of the device and is capable of free vertical movement therein, consists of two light metal plates o and an interposed body b, of cork or other buoyant material. Under this con- ICO struction it will be observed that the float is reversible, and even should it be repeatedly turned over a plate a will always be uppermost or in position to engage with the contact-points E and close the circuit to ring an alarm when the liquid in the receptacle G has reached a predetermined height or level in the recepacle,and consequently a corresponding level in the body of the device.

Having thus described our invention, we claim as new and desire to secure by Letters Patentl. An alarm device for receptacles, consisting of a hollow body formed of telescopic sections each closed at one end and provided with openings, a oat having a metal face and located in the body, contact-points extending throughA the top of the inner section into the same to be engaged by the metal face of the oat, and an alarm device in circuit with the contact-points, substantially as described.

2. In an alarm device for receptacles, the combination with a hollow cylindrical body constructed in telescopic sections having caps at their outer ends and provided with airvents and inlet and outlet openings for liquid, contact-points passed through the cap of one section, and an alarm in circuit with the contact-points, of a reversible float located Within the body-section of the device, consisting of a buoyant body-section and metal plates at top and bottom of the body-section, either plate being adapted for engagement with the contact-points, for the purpose set forth.

3. In an alarm device for receptacles, the combination with a hollow cylindrical body constructed in two sections mounted to slide one in the other, the said sections being provided with air-vents and with inlet and outlet openings for liquid, one section of the body being also provided with longitudinal slots and the other section with guide-pins which extend into the said slots, of contactpoints located in an end of one of the said sections and extending Within the body, nuts insulated from the end portion of the said section of the body, into which the said contact-points extend and are secured, an alarm device in circuit with the contact-points, and a float having free movement in the body of the device, which float consists of opposing metal plates, either plate adapted for engagement with the said contact-points, and an interposed cork body, as and for the purpose described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

MEYER KUBITZKY. RICHARD B. STEWART. Witnesses:

J. FRED. AOKER, ISAAC KUBITZKY. 

